Die for compression molding of coating on surface of workpiece

Abstract

The utility model discloses a mold for compression molding of a coating on the surface of a workpiece, which comprises a lower bottom plate, a core rod is fixedly connected to the center of the top of the lower bottom plate, a pair of lower side top plates is fixedly connected to the lower bottom plate, a middle mold plate is fixedly connected to the tops of the lower side top plates, and a molding cavity is formed in the center of the middle mold plate. An upper die plate is arranged above the middle die plate, an upper die is fixedly connected to the center of the bottom of the upper die plate, stripping ejector rods are fixedly connected to the two sides of the bottom of the upper die plate, pin holes are formed in rod bodies of the bottom ends of the stripping ejector rods, stretching pins are inserted into the pin holes, and a stripping assembly is arranged between the lower bottom plate and the middle die plate. The mold is simple in structure, press equipment does not need to be newly customized, the cost can be reduced, rapid development of various products is achieved, rapid and efficient demolding can be achieved with lower cost through the stripping assembly, and the time cost and the labor cost in the pressing forming process and the hardware input cost in the design and development process are effectively saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of forming die, especially relates to a die for workpiece surface coating compression forming. BACKGROUND

[0002] The workpiece usually needs to prepare a coating on the workpiece surface when processing, needs to mix resin powder, carbon powder and other fillers uniformly during preparation, then carries out compression forming on the sample surface through the press, and the powder compression forming process of the workpiece surface coating needs to utilize the press, and usually needs to customize the press with different compression structures and demolding structures according to different workpiece shapes to realize the compression forming and automatic demolding of the powder, and one type of press equipment needs to be customized for one type of workpiece, which is high in cost and is not conducive to the new product development of multiple workpieces. Therefore, the utility model has important significance for solving the above problems. SUMMARY

[0003] The utility model provides a die for workpiece surface coating compression forming, simple structure can utilize the general type flat plate press when carrying out compression coating, combines specific die design, and different shapes of workpieces adopt different dies, so that the purpose of reducing cost and realizing the rapid development of multiple products is achieved, the workpiece that has been compressed with the coating can be ejected through the material ejection assembly, so as to complete the demolding process, compared with the traditional customized press equipment, the die is combined with the flat plate press, rapid and efficient demolding can be realized at lower cost, the time cost and manpower cost of the coating compression process and the hardware investment cost of the design and development process are effectively saved, and the problems in the background art are solved.

[0004] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0005] The utility model discloses a die for workpiece surface coating compression forming, including the lower bottom plate that surface is provided with the material ejection support plate, install on the middle die plate of lower bottom plate, the limit guide sleeve that is vertically arranged on the surface of material ejection support plate and is located the two sides of middle die plate, with the material ejection ejector rod that limit guide sleeve sleeve sets cooperation, install on the upper die plate of material ejection ejector rod top and the upper die that can detachable installation is located in the upper die plate bottom;

[0006] The surface of the middle die plate is provided with a forming cavity matched with the outer contour of the upper die, and a material ejection block matched with the contour of the forming cavity is detachably installed on the material ejection support plate.

[0007] The bottom end of the material ejection ejector rod is provided with a pin hole capable of inserting a stretch pin, and a limiting groove is provided on both sides of the limiting guide sleeve and arranged in the same direction as the pin hole.

[0008] Further, the core rod is arranged in the perforation of the surface of the top material supporting plate.

[0009] Further, the core rod is inserted into the positioning hole of the material removing block.

[0010] Further, the positioning hole is a downward opening blind hole or a through hole.

[0011] Further, the upper die bottom surface is provided with a slot matched with the core rod.

[0012] Further, the middle die plate bottom is provided with a spring slot on both sides of the forming cavity, and the surface of the top material supporting plate is provided with a limiting spring matched with the spring slot.

[0013] Further, the limiting slot is vertically arranged, and the slot width of the limiting slot is not less than the diameter of the pin hole.

[0014] Further, the middle die plate is detachably installed on the lower bottom plate through the lower top plate arranged on both sides of the bottom.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] (1) A die for workpiece surface coating press forming in the utility model, simple structure, through the combination of general type flat plate press and special designed die for workpiece surface coating press, different dies are used for different workpieces, and special shaped press equipment is not needed, so that the cost is reduced, and the purpose of realizing rapid development of various products is achieved.

[0017] (2) A die for workpiece surface coating press forming in the utility model, through the cooperation of the upper die plate, the middle die plate and the material removing assembly, the quality of coating press can be guaranteed, misplacement of workpieces and powder in the press process can be avoided, and the workpiece with prepared coating can be quickly ejected, compared with the traditional custom press equipment, the die combined with the flat plate press can realize high-quality coating press and rapid and efficient demolding at a lower cost, and the time cost and labor cost of the press forming process and the hardware investment cost of the design and development process are effectively saved.

[0018] (3) A die for workpiece surface coating press forming in the utility model, through the design of the spring, the situation that the material removing block is not separated from the middle die plate due to the large friction force between the assemblies caused by the falling of coating powder into the assembly gap can be overcome, and the spring can assist the assembly to return to the original position.

[0019] (4) The utility model discloses a mould for workpiece surface coating press forming, and each component is convenient to assemble and disassemble, and is suitable for different sizes of workpieces, and can be put into use by replacing part of components, for example, for the workpieces of different thicknesses, only need to replace the middle mould plate, the material removal block and the lower side top plate, change the thickness of the middle mould plate, the material removal block and the lower side top plate, and for example, for the workpieces of different outer diameters, only need to replace the upper mould, the material removal block and the middle mould plate.

[0020] Of course, it is not necessary for any product embodying the utility model to achieve all the advantages mentioned above simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0022] Figure 1 It is a structure schematic view of a mould for workpiece surface coating press forming of the utility model specific embodiment 1;

[0023] Figure 2 It is Figure 1 It is a structure schematic view of the middle lower bottom plate and the upper part of the middle mould plate;

[0024] Figure 3 It is Figure 1 It is a structure schematic view of the middle lower bottom plate and the lower part of the middle mould plate;

[0025] Figure 4 It is Figure 1 It is a structure schematic view of the middle upper mould plate and the lower part of the upper mould;

[0026] Figure 5 It is Figure 1 It is a position relation and structure schematic view of the middle material removal block, the material feeding supporting plate, the limiting guide sleeve and the limiting spring;

[0027] Figure 6 It is a structure schematic view of a mould for workpiece surface coating press forming of specific embodiment 2;

[0028] Figure 7 It is a structure schematic view of a mould for workpiece surface coating press forming of specific embodiment 3;

[0029] Figure 8 It is a structure schematic view of a mould for workpiece surface coating press forming of specific embodiment 4;

[0030] Figure 9 It isFigure 8 Structure diagram of middle upper die plate and lower part of upper die from perspective view;

[0031] Figure 10 For Figure 8 Structure diagram of position relationship and structure of middle stripper, material ejection backing plate, limiting guide sleeve and limiting spring from perspective view;

[0032] Figure 11 For Figure 8 Structure diagram of middle upper die plate and lower part of upper die from perspective view.

[0033] In the drawings, the components represented by each reference numeral are listed as follows:

[0034] 1, lower bottom plate; 101, through hole; 2, core rod; 3, lower side top plate; 4, middle die plate; 5, forming cavity; 6, spring groove; 7, upper die plate; 8, upper die; 9, insertion slot; 10, stripper ejector pin; 11, pin hole; 12, stretch pin; 13, material ejection backing plate; 14, stripper; 15, positioning hole; 16, limiting spring; 17, limiting guide sleeve; 18, limiting groove. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] In the description of the present application, it should be understood that the terms "relative", "one end", "internal", "transverse", "end", "two ends", "two sides", "front", "one end surface", "the other end surface" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0037] Embodiment 1:

[0038] As Figures 1-5 shown, the technical scheme is a mold for workpiece surface coating press forming, which comprises a lower bottom plate 1 provided with a material ejection backing plate 13 on the surface, a middle die plate 4 installed on the lower bottom plate 1, limiting guide sleeves 17 vertically arranged on the surface of the material ejection backing plate 13 and located on both sides of the middle die plate 4, stripper ejector pins 10 matched with the limiting guide sleeves 17, an upper die plate 7 installed on the top of the stripper ejector pins 10, and an upper die 8 detachably installed on the bottom of the upper die plate 7; the lower bottom plate 1 and / or the upper die plate 7 are fixed on the top lifting head end of the press (not shown in the figure).

[0039] The middle mold plate 4 is provided with a forming cavity 5 matched with the outer contour of the upper mold 8, and a material removal block 14 matched with the contour of the forming cavity 5 is detachably installed on the material ejection base plate 13; in the embodiment, the detachable installation is achieved by cooperating with the locking holes at the bottom of the material ejection base plate 13 through bolts, which has the characteristic of easy disassembly, and other detachable structures or modes such as flanges, fixed blocks, clamping blocks, etc. can achieve the same effect and are within the protection scope of the technical scheme.

[0040] The bottom end of the material ejection ejector pin 10 is provided with pin holes 11 into which the stretch pins 12 are inserted, and the two sides of the limiting guide sleeve 17 are provided with limiting grooves 18 arranged in the same direction as the pin holes 11 and through which the stretch pins 12 are arranged.

[0041] The core rod 2 is installed in the through hole 101 provided on the surface of the material ejection base plate 13.

[0042] The core rod 2 is inserted into the positioning hole 15 provided on the material removal block 14; in the embodiment, the positioning hole 15 is a through hole.

[0043] The bottom surface of the upper mold 8 is provided with an insertion slot 9 matched with the core rod 2.

[0044] The bottom of the middle mold plate 4 is provided with spring grooves 6 on both sides of the forming cavity 5, and the surface of the material ejection base plate 13 is provided with limiting springs 16 matched with the spring grooves 6.

[0045] The limiting grooves 18 are vertically arranged, and the groove width of the limiting grooves 18 is not less than the diameter of the pin holes 11.

[0046] The middle mold plate 4 is detachably installed on the lower base plate 1 through the lower top plate 3 arranged on both sides of the bottom; in the embodiment, the detachable installation is achieved by cooperating with the locking holes at the bottom of the lower base plate 1 through bolts, which has the characteristic of easy disassembly, and other detachable structures or modes such as flanges, fixed blocks, clamping blocks, etc. can achieve the same effect and are within the protection scope of the technical scheme.

[0047] The lower base plate 1 and / or the upper mold 7 can be controlled by an external press to drive the upper mold 8 to move downward and / or the lower base plate 1 to move upward until the core rod 2 is inserted into the insertion slot 9, at which time the upper mold 8 can extend into the forming cavity 5 and press the powder laid on the surface of the material removal block 14.

[0048] In the specific embodiment, the material removal block 14, the forming cavity 5, and the upper die 8 are circular, and the outer diameter of the material removal block 14 and the outer contour of the upper die 8 match the outer contour of the forming cavity 5. The material removal block 14 is attached to the inner wall of the forming cavity 5 when moving. After the powder is introduced into the forming cavity 5, it can be evenly spread on the surface of the material removal block 14 and around the mandrel 2. After the pressing and forming are completed, the powder can form an annular coating in the forming cavity 5 and adhere to the workpiece. Of course, other shapes such as oval and triangle can be used for the material removal block 14, the forming cavity 5, and the upper die 8 as long as they match each other and have corresponding structural relationships. Other solutions that match each other and have corresponding structural relationships belong to the protection scope of the technical solution.

[0049] In the specific embodiment, the bottom of the middle die plate 4 is provided with spring grooves 6 on both sides, and the top of the material removal supporting plate 13 is fixedly connected with limiting springs 16. The number of the limiting springs 16 is the same as that of the spring grooves 6, and the top end of each limiting spring 16 is inserted into the corresponding spring groove 6. The limiting springs 16 can solve the problem of large friction in the components and the difficulty of separating the material removal block 14 from the middle die plate 4, and can assist the components to return to the original position.

[0050] In the specific embodiment, the limiting guide sleeve 17 is circular, and other shapes that can realize the limiting of the upward and downward guide belong to the protection scope of the technical solution. In the specific embodiment, the limiting guide sleeve 17 is in sleeve connection with the material removal ejector pin 10, and each material removal ejector pin 10 is inserted into the corresponding limiting guide sleeve 17. In the specific embodiment, the limiting groove 18 is a waist-shaped groove structure, and the groove width is equal to or slightly larger than the hole diameter of the pin hole 11. Other forms of rectangular grooves that can achieve the same effect belong to the protection scope of the technical solution. When the stretch pin 12 passes through the limiting groove 18 and is inserted into the pin hole 11, the upper die plate 7 slowly rises under the control of the external press. At this time, the stretch pin 12 can drive the limiting guide sleeve 17 and the entire material removal assembly composed of the material removal supporting plate 13, the material removal block 14, and the limiting guide sleeve 17 to move upward, while the middle die plate 4 remains stationary. Therefore, the material removal block 14 in the material removal assembly can eject the annular piece with the coating in the forming cavity 5, so as to complete the demolding process. Compared with the traditional custom press equipment, the mold combined with the flat plate press can realize fast and efficient demolding at a lower cost, effectively saving the time cost, labor cost, and hardware investment cost in the design and development process.

[0051] Embodiment 2:

[0052] As Figure 6As shown, the difference between this specific embodiment and specific embodiment 1 is that when the thickness of the workpiece to be surface coated and pressed becomes thicker, the original middle template 4, stripping block 14 and lower top plate 3 are disassembled through a detachable structure and replaced with a middle template 4, stripping block 14 and lower top plate 3 with a higher height; and in the specific pressing process, the mandrel 2 can be inserted into the slot 9.

[0053] Example 3:

[0054] like Figure 7 As shown, the difference between this specific embodiment and specific embodiment 1 is that when the outer diameter of the workpiece that needs to be surface coated and pressed changes, the original middle template 4, stripper block 14 and upper mold 8 are disassembled through a detachable structure and replaced with middle template 4, stripper block 14 and upper mold 8 that meet the outer diameter requirements of the workpiece. That is, the inner diameter of the middle template 4 is enlarged, the outer diameter of the stripper block 14 is enlarged, and the outer diameter of the upper mold 8 is enlarged.

[0055] Example 4:

[0056] like Figures 8-11 As shown, the difference between this specific embodiment and specific embodiment 1 is that the shapes of the forming cavity 5, upper mold 8, and stripper block 14 in embodiment 1 can be changed according to the shape of the workpiece. For example, when the workpiece is a solid square column, the shapes of the forming cavity 5, upper mold 8, and stripper block 14 are also designed to be square. At this time, the positioning hole 15 of the stripper block 14 is a blind hole, that is, the hole in the middle of the stripper block 14 is not through, the lower end has a hole for inserting the core rod 2, and the upper end has no hole and is a whole plane. By setting the blind hole, the stripper block 14 can be fitted on the core rod, which plays a positioning role when installing various components and a stabilizing role when pressing the coating. The core rod 2 is inserted into the blind hole. At this time, the square part with the pressed coating can be processed by the mold without the need to customize a press equipment of a specific shape, thereby achieving the purpose of reducing costs and realizing the rapid development of various products.

[0057] The working principle of this utility model is as follows:

[0058] The utility model discloses when using, can be fixed respectively in the upper die plate 7 and lower bottom plate 1 in this mould on the upper and lower presser plate of external connection press, when loading, the mould is opened to press machine through the operation panel control on the operation of press, then the powder to be pressed is introduced into the forming cavity 5, and is even laid flat on the surface of the material removal block 14, then the workpiece (such as carbon ceramic brake disc) is placed on the powder, then the powder to be pressed is poured again on the workpiece and is even spread, so as to complete loading, after loading is finished, the press machine parameter is set through the operation panel, and the press is controlled to pressurize, so that the upper die 8 extends to the forming cavity 5 and contacts the powder in the forming cavity 5, so as to press the powder spread on the surface of the material removal block 14, and the process of demoulding is entered after a certain time is kept in this state and is pressed, before demoulding starts, the stretch pin 12 is passed through the limiting slot 18 on the limiting guide sleeve 17 and is inserted into the pin hole 11 at the bottom end of the material removal ejector pin 10, then the upper die plate 7 is slowly raised through external connection press, at this time, the stretch pin 12 can drive the limiting guide sleeve 17 to move upwards together with the whole material removal assembly, and the limiting spring 16 is compressed under stress, and the middle die plate 4 remains unmoved, so that the annular part in the forming cavity 5 that has been pressed the coating is ejected through the material removal block 14 in the material removal assembly, so as to complete the demoulding process, and the press is unloaded after demoulding, and the material removal assembly falls to the lower bottom plate 1 under the help of the limiting spring 16.

[0059] The preferred embodiments disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details, and the utility model is not limited to the specific implementation described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents.

Claims

1. A mold for press forming of a coating layer on a surface of a workpiece, characterized by, The utility model relates to a material stripping device for injection mould, including the lower bottom plate (1) that surface is provided with the material stripping support plate (13), install on the middle mould plate (4) of lower bottom plate (1), the limiting guide sleeve (17) of vertical setting in the material stripping support plate (13) surface and located middle mould plate (4) both sides, with the material stripping ejector rod (10) of limiting guide sleeve (17) sleeve set cooperation, install on the upper die (8) of material stripping ejector rod (10) top and the upper die (8) of detachable installation on the upper die (7) bottom, The surface of the middle mould plate (4) is provided with a forming cavity (5) matched with the outer contour of the upper die (8), and the material stripping block (14) matched with the contour of the forming cavity (5) is detachably installed on the material stripping support plate (13). The bottom end of the material stripping ejector rod (10) is provided with pin holes (11) capable of inserting the stretch pin (12) on both sides of the rod body, and the limiting grooves (18) capable of penetrating the stretch pin (12) are arranged on both sides of the limiting guide sleeve (17) in the same direction as the pin holes (11).

2. A mold for press forming a coating layer on a workpiece surface according to claim 1, wherein The core rod (2) is installed in the perforation (101) formed on the surface of the material stripping support plate (13).

3. A mold for press forming a coating layer on a workpiece surface according to claim 2, wherein The core rod (2) is inserted and matched with the positioning hole (15) formed on the material stripping block (14).

4. A mold for press forming a coating layer on a workpiece surface according to claim 3, wherein The positioning hole (15) is a downward opening blind hole or a through hole.

5. The mold for press forming of a coating layer on a workpiece surface according to claim 1, wherein The bottom surface of the upper die (8) is provided with an insertion slot (9) matched with the core rod (2).

6. The mold for press forming of a coating layer on a workpiece surface according to claim 1, wherein The bottom of the middle mould plate (4) is provided with spring grooves (6) on both sides of the forming cavity (5), and the surface of the material stripping support plate (13) is provided with limiting springs (16) matched with the spring grooves (6).

7. The mold for press forming of a coating layer on a workpiece surface according to claim 1, wherein The limiting grooves (18) are vertically arranged, and the groove width of the limiting grooves (18) is not less than the diameter of the pin holes (11).

8. The mold for press forming of a coating layer on a workpiece surface according to claim 1, wherein The middle mould plate (4) is detachably installed on the lower bottom plate (1) through the lower top plates (3) arranged on both sides of the bottom.

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